diff options
| -rw-r--r-- | drivers/hwmon/sch5627.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hwmon/sch5627.c b/drivers/hwmon/sch5627.c index 0eefb8c0aef2..bf408e35e2c3 100644 --- a/drivers/hwmon/sch5627.c +++ b/drivers/hwmon/sch5627.c @@ -34,6 +34,7 @@ #define SCH5627_REG_CTRL 0x40 #define SCH5627_CTRL_START BIT(0) +#define SCH5627_CTRL_LOCK BIT(1) #define SCH5627_CTRL_VBAT BIT(4) #define SCH5627_NO_TEMPS 8 @@ -231,6 +232,14 @@ static int reg_to_rpm(u16 reg) static umode_t sch5627_is_visible(const void *drvdata, enum hwmon_sensor_types type, u32 attr, int channel) { + const struct sch5627_data *data = drvdata; + + /* Once the lock bit is set, the virtual registers become read-only + * until the next power cycle. + */ + if (data->control & SCH5627_CTRL_LOCK) + return 0444; + if (type == hwmon_pwm && attr == hwmon_pwm_auto_channels_temp) return 0644; |